Table 1.
Characteristics of the EPIC-PANACEA Cohort
| EPIC-PANACEA centersa | Total baseline population n | Mean age yrs (SD) | Mean follow-up time yrs (SD) | Method of contacting for 2nd assessment | Not (yet) contacted n (%) | Death n (%) | (E) migrated n (%) | 2nd assessment missingbn (%) | Nonresponsec n (%) |
|---|---|---|---|---|---|---|---|---|---|
| Heidelberg (GE) |
24,954 |
51.0 (8.1) |
2.1 (0.6) |
P |
0 |
129 (0.5) |
na |
1,771 (7.1) |
1,642 (6.6) |
| Spain |
40,418 |
49.3 (8.0) |
3.3 (0.4) |
T |
0 |
202 (0.5) |
na |
703 (1.7) |
501 (1.2) |
| France |
71,910 |
52.9 (6.7) |
3.4 (0.8) |
P |
0 |
382 (0.5) |
na |
4,544 (6.3) |
4,162 (5.8) |
| Cambridge (UK) |
24,818 |
59.3 (9.3) |
3.7 (0.7) |
C |
0 |
637 (2.6) |
0 |
10,199 (41.1) |
9,562 (39.5) |
| Utrecht (NL) |
16,869 |
57.7 (6.0) |
4.4 (0.8) |
P |
0 |
225 (1.3) |
859 (5.1) |
4,723 (28.0) |
3,639 (23.1) |
| Malmo (SW) |
27,463 |
58.1 (7.6) |
4.9 (0.5) |
P |
0 |
776 (2.8) |
na |
5,832 (21.2) |
5,056 (18.9) |
| Doetinchem (NL) |
7,139 |
44.0 (11.8) |
5.0 (0.2) |
C |
1,101 (15.5) |
68 (1.0) |
80 (1.1) |
2,584 (36.2) |
1332 (22.6) |
| Denmark |
55,753 |
56.7 (4.4) |
5.3 (0.3) |
P |
0 |
1,610 (2.9) |
317 (0.6) |
11,594 (20.8) |
9,667 (18.0) |
| Oxford (UK) Health Conscious |
47,208 |
44.5 (14.5) |
5.3 (0.5) |
P |
0 |
827 (1.8) |
393 (0.8) |
17,188 (36.4) |
15,968 (34.7) |
| Oxford (UK) General Health |
7,221 |
53.1 (7.9) |
5.6 (0.6) |
P |
0 |
138 (1.9) |
29 (0.4) |
1,945 (26.9) |
1,778 (25.2) |
| Norway |
35,829 |
48.2 (4.3) |
6.2 (0.5) |
P |
0 |
375 (1.0) |
157 (0.4) |
9,491 (26.5) |
8,959 (25.4) |
| Amsterdam/Maastricht (NL) |
14,920 |
42.3 (10.9) |
6.2 (1.1) |
P |
0 |
163 (1.1) |
533 (3.6) |
5,483 (36.7) |
4,787 (33.7) |
| Greece |
25,997 |
53.2 (12.6) |
7.7 (2.1) |
T |
0 |
590 (2.3) |
na |
1,832 (5.3) |
792 (3.1) |
| Potsdam (GE) |
26,891 |
50.5 (9.0) |
8.5 (0.9) |
P |
4,282 (15.9) |
827 (3.1) |
na |
8,528 (31.7) |
3,419 (15.7) |
| Naples (IT) |
4,947 |
50.3 (7.7) |
8.7 (1.2) |
P |
4,271 (86.3) |
1 (0.0) |
0 |
4356 (88.1) |
84 (12.4) |
| Florence (IT) |
13,089 |
51.6 (7.7) |
9.3 (1,1) |
P |
0 |
230 (1.8) |
108 (0.8) |
2,883 (22.0) |
2,545 (20.0) |
| Umea (SW) |
25,048 |
46.1 (10.3) |
9.9 (0.3) |
P |
0 |
759 (3.0) |
1012 (4.0) |
11,501 (45.9) |
9,730 (41.8) |
| Varese (IT) |
11,797 |
51.6 (8.2) |
11.1 (1.1) |
P/T |
0 |
287 (2.4) |
209 (1.8) |
1,749 (14.8) |
1,253 (11.1) |
| Ragusa (IT)d |
5,949 |
47.3 (7.6) |
- |
- |
5,949 (100) |
- |
- |
5,949 (100) |
- |
| Turin (IT)d |
9,749 |
50.2 (7.7) |
- |
- |
9,749 (100) |
- |
- |
9,749 (100) |
- |
| Total | 497,969 | 51.5 (9.9) | 5.3 (2.4) | 25,355 (5.1) | 8,226 (1.7) | 3,697 (0.7) | 122,154 (24.5) | 84,876 (18.4) |
Abbreviation: yrs - years, SD – standard deviation, na - no information available, C - 2nd assessment at study center; P - 2nd assessment by postal survey; T - 2nd assessment by telephone interview.
a Multiple centers within a country were treated as a single study center, when length of follow-up and data collection methods did not differ and when coordination took place out of one center (Spain, France, Denmark). In Norway and Greece only one research center was situated.
b Percentage corresponds to the overall response rates calculated according to the standard definitions used by the American Association for Public Opinion Research (AAPOR) [20].
c For calculation of the proportion non-response, baseline participants who were not (yet) approached, died or emigrated before the second assessment were excluded (n = 37,278).
d Ragusa and Turin did not contact any of their participants for a second assessment yet.